Smelting (Revision 2867)

Furnace

The Furnace is used for Smelting, which is a fancy word for burning blocks to turn them into other items. Smelting is required for creating certain building blocks like Glass and creating refined ore to make Armor. It can also be used to make certain dyes for wool and other items.

Furnace in action:

Furnace Fuels

The Furnace only works when the bottom slot is filled with one of a handful of optional fuels. Coal and Charcoal are the longest-lasting fuels (per unit), excluding Lava. The "Power" rating in the table below is based on the output of each fuel--the higher the rating, the more items you can smelt per unit of fuel. Additionally, wood based items (such as wooden stairs, trapdoors, etc) also can be used as fuels, but they are not very efficient.